Could I trade in 2 iphone 4 for an Iphone 5 or 5c?

Could I trade in 2 iphone 4 for an Iphone 5 or 5c?

Yes you can. But it will cost $100 for a 5c. I recently did that and I had to pay $100. Worth it. 5c is so much better

Iphone 4 are worth much less then "4S" they will get you about half way, less for Verizon or Sprint 4